b43: Add SDIO_DEVICE() for EW-CG1102GC

This patch enables the EW-CG1102GC SDIO card in the b43 driver.

b43-sdio mmc0:0001:1: Chip ID 14e4:4318
ssb: Core 0 found: ChipCommon (cc 0x800, rev 0x0D, vendor 0x4243)
ssb: Core 1 found: IEEE 802.11 (cc 0x812, rev 0x09, vendor 0x4243)
ssb: Core 2 found: PCI (cc 0x804, rev 0x0C, vendor 0x4243)
ssb: Core 3 found: PCMCIA (cc 0x80D, rev 0x07, vendor 0x4243)
b43-phy0: Broadcom 4318 WLAN found (core revision 9)
b43-phy0 debug: Found PHY: Analog 3, Type 2, Revision 7
b43-phy0 debug: Found Radio: Manuf 0x17F, Version 0x2050, Revision 8

Tested with openfwwf-5.2 using a SuperH SDHI host controller.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: John W. Linville <linville@tuxdriver.com>